[EMTAL] - Server Framework 101 tutorial work

estate/__init__.py

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+from . import models

estate/__manifest__.py

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+{
+    "name": "Real Estate",
+    "version": "0.1",
+    "depends": [
+        "base",
+    ],
+    "data": [
+        "security/ir.model.access.csv",
+        "views/estate_property_views.xml",
+        "views/estate_property_offer_views.xml",
+        "views/estate_property_type_views.xml",
+        "views/estate_property_tag_views.xml",
+        "views/res_users_views.xml",
+        "views/estate_menus.xml",
+    ],
+    "installable": True,
+    "application": True,
+    "author": "Odoo S.A.",
+    "license": "LGPL-3",
+}

estate/models/__init__.py

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+from . import (
+    estate_property,
+    estate_property_offer,
+    estate_property_tag,
+    estate_property_type,
+    res_users,
+)

estate/models/estate_property.py

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+from odoo import api, fields, models
+from odoo.exceptions import UserError
+from odoo.tools.float_utils import float_compare, float_is_zero
+
+
+class EstateProperty(models.Model):
+    _name = "estate.property"
+    _description = "Estate Property Model"
+    _order = "id desc"
+
+    name = fields.Char(required=True)
+    description = fields.Text()
+    postcode = fields.Char()
+    date_availability = fields.Date(
+        "Availability Date",
+        default=lambda self: fields.Date.add(fields.Date.today(), months=3),
+        copy=False,
+    )
+    expected_price = fields.Float(required=True)
+    selling_price = fields.Float(readonly=True, copy=False)
+    bedrooms = fields.Integer(default=2)
+    living_area = fields.Integer()
+    facades = fields.Integer()
+    garage = fields.Boolean()
+    garden = fields.Boolean()
+    garden_area = fields.Integer()
+    garden_orientation = fields.Selection(
+        selection=[
+            ("n/a", "N/A"),
+            ("north", "North"),
+            ("east", "East"),
+            ("south", "South"),
+            ("west", "West"),
+        ],
+    )
+    state = fields.Selection(
+        selection=[
+            ("new", "New"),
+            ("offer_received", "Offer Received"),
+            ("offer_accepted", "Offer Accepted"),
+            ("sold", "Sold"),
+            ("canceled", "Canceled"),
+        ],
+        default="new",
+        copy=False,
+    )
+    active = fields.Boolean(default=True)
+
+    # Many2one references
+    type_id = fields.Many2one(comodel_name="estate.property.type")
+    buyer_id = fields.Many2one(comodel_name="res.partner", copy=False)
+    salesperson_id = fields.Many2one(
+        comodel_name="res.users",
+        default=lambda self: self.env.user,
+    )
+
+    # One2many references
+    offer_ids = fields.One2many(
+        comodel_name="estate.property.offer",
+        inverse_name="property_id",
+    )
+
+    # Many2many references
+    tag_ids = fields.Many2many(
+        comodel_name="estate.property.tag",
+        string="Tags",
+    )
+
+    # Computed
+    total_area = fields.Float(compute="_compute_total_area")
+
+    @api.depends("living_area", "garden_area")
+    def _compute_total_area(self):
+        for record in self:
+            record.total_area = record.living_area + record.garden_area
+
+    best_price = fields.Float(compute="_compute_best_price")
+
+    @api.depends("offer_ids.price")
+    def _compute_best_price(self):
+        for record in self:
+            prices = record.offer_ids.mapped("price")
+            record.best_price = max(prices) if prices else 0.0
+
+    # On change
+    @api.onchange("garden")
+    def _onchange_garden(self):
+        if self.garden:
+            self.garden_area = 10
+            self.garden_orientation = "north"
+        else:
+            self.garden_area = 0
+            self.garden_orientation = "n/a"
+
+    def action_property_sold(self):
+        self.ensure_one()
+        if self.state == "canceled":
+            raise UserError(
+                self.env._(
+                    "This property has already been canceled. It can not be sold!"
+                )
+            )
+        elif self.state == "sold":
+            raise UserError(
+                self.env._(
+                    "This property has already been sold. It can not be sold again!"
+                )
+            )
+        elif not self.offer_ids:
+            raise UserError(self.env._("There is no offer with this property."))
+        else:
+            self.state = "sold"
+
+    def action_property_canceled(self):
+        for record in self:
+            if record.state == "sold":
+                raise UserError(
+                    self.env._(
+                        "This property has already been sold. It can not be canceled!"
+                    )
+                )
+            elif record.state == "canceled":
+                raise UserError(
+                    self.env._(
+                        "This property has already been canceled. It can not be canceled again!"
+                    )
+                )
+            else:
+                record.state = "canceled"
+
+    # Constraints
+    _check_expected_price = models.Constraint(
+        "CHECK(expected_price >= 0)", "Expected price must be >= 0!"
+    )
+    _check_selling_price_positive = models.Constraint(
+        "CHECK(selling_price >= 0)", "Selling price must be >= 0!"
+    )
+
+    @api.constrains("selling_price", "expected_price")
+    def _check_selling_price(self):
+        for record in self:
+            if float_is_zero(record.selling_price, precision_digits=2):
+                continue
+
+            if (
+                not float_compare(
+                    record.selling_price,
+                    record.expected_price * 0.9,
+                    precision_digits=2,
+                )
+                == 1
+            ):
+                raise UserError(
+                    self.env._(
+                        "Selling price cannot be lower than 90% of the expected price!"
+                    )
+                )
+
+    # Model decorators
+    @api.ondelete(at_uninstall=False)
+    def _prevent_deletion_if_not_new_or_canceled(self):
+        for record in self:
+            if record.state not in ("new", "canceled"):
+                raise UserError(
+                    self.env._(
+                        "You cannot delete a property unless its state is 'New' or 'Canceled'."
+                    )
+                )

estate/models/estate_property_offer.py

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+from datetime import timedelta
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError
+
+
+class EstatePropertyOffer(models.Model):
+    _name = "estate.property.offer"
+    _description = "Estate Property Offer Model"
+    _order = "price desc"
+
+    price = fields.Float()
+    status = fields.Selection(
+        selection=[
+            ("accepted", "Accepted"),
+            ("refused", "Refused"),
+        ],
+        copy=False,
+    )
+    validity = fields.Integer("Validity (days)", default=7)
+
+    # Many2one references
+    partner_id = fields.Many2one(comodel_name="res.partner", required=True)
+    property_id = fields.Many2one(comodel_name="estate.property", required=True)
+    property_type_id = fields.Many2one(
+        comodel_name="estate.property.type", related="property_id.type_id", store=True
+    )
+
+    # Computed fields
+    date_deadline = fields.Date(
+        string="Deadline Date",
+        compute="_compute_date_deadline",
+        inverse="_inverse_date_deadline",
+    )
+
+    @api.depends("validity", "create_date")
+    def _compute_date_deadline(self):
+        for record in self:
+            base_date = (
+                record.create_date.date() if record.create_date else fields.Date.today()
+            )
+            record.date_deadline = base_date + timedelta(days=record.validity)
+
+    @api.onchange("date_deadline")
+    def _inverse_date_deadline(self):
+        for record in self:
+            base_date = (
+                record.create_date.date() if record.create_date else fields.Date.today()
+            )
+            if record.date_deadline and base_date:
+                record.validity = (record.date_deadline - base_date).days
+
+    def action_confirm_offer(self):
+        self.ensure_one()
+
+        # Check property have already been sold or canceled
+        if self.property_id.state in ["sold", "canceled"]:
+            raise UserError(
+                self.env._("This property has already been sold or canceled!")
+            )
+
+        # Any accepted offer?
+        if any(o.status == "accepted" for o in self.property_id.offer_ids):
+            raise UserError(self.env._("An offer have already been accepted!"))
+
+        # Accept offer
+        self.status = "accepted"
+        self.property_id.write(
+            {
+                "state": "offer_accepted",
+                "selling_price": self.price,
+                "buyer_id": self.partner_id.id,
+            }
+        )
+
+    def action_refuse_offer(self):
+        for offer in self:
+            offer.status = "refused"
+
+    _check_price = models.Constraint("CHECK(price >= 0)", "Offer price must be >= 0!")
+
+    # Model decorators
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            property_rec = self.env["estate.property"].browse(vals["property_id"])
+
+            if property_rec.state in ["sold", "canceled"]:
+                raise UserError(
+                    self.env._(
+                        "Can't create an offer for an already sold/canceled property!"
+                    )
+                )
+
+            for offer in property_rec.offer_ids:
+                if vals.get("price", 0) <= offer.price:
+                    raise UserError(
+                        self.env._(
+                            "The offer amount must be strictly higher than existing offers."
+                        )
+                    )
+
+            property_rec.state = "offer_received"
+
+        return super().create(vals_list)

estate/models/estate_property_tag.py

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+from odoo import fields, models
+
+
+class EstatePropertyTag(models.Model):
+    _name = "estate.property.tag"
+    _description = "Estate Property Tag Model"
+    _order = "name"
+
+    name = fields.Char("Tag Name", required=True)
+    color = fields.Integer(default=1)
+
+    # Constraints
+    _unique_name = models.Constraint("UNIQUE(name)", "Property Tag name must unique!")

estate/models/estate_property_type.py

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+from odoo import fields, models, api
+
+
+class EstatePropertyType(models.Model):
+    _name = "estate.property.type"
+    _description = "Estate Property Type Model"
+    _order = "name"
+
+    name = fields.Char("Type Name", required=True)
+    sequence = fields.Integer(default=1, help="Used to order stages. Lower is better.")
+
+    # One2many relations
+    property_ids = fields.One2many(
+        comodel_name="estate.property", inverse_name="type_id", string="Properties"
+    )
+    offer_ids = fields.One2many(
+        comodel_name="estate.property.offer",
+        inverse_name="property_type_id",
+        string="Offers",
+    )
+
+    # Computed
+    offer_count = fields.Integer(compute="_compute_offer_count")
+
+    @api.depends("offer_ids")
+    def _compute_offer_count(self):
+        for record in self:
+            record.offer_count = len(record.offer_ids)
+
+    # Constraints
+    _unique_name = models.Constraint("UNIQUE(name)", "Property Type name must unique!")

estate/models/res_users.py

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+from odoo import fields, models
+
+
+class ResUser(models.Model):
+    _inherit = "res.users"
+
+    property_ids = fields.One2many(
+        comodel_name="estate.property",
+        inverse_name="salesperson_id",
+        string="Real Estate Properties",
+        domain=[("state", "in", ["new", "offer_received"])],
+    )

estate/security/ir.model.access.csv

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+id,name,model_id/id,group_id/id,perm_read,perm_write,perm_create,perm_unlink
+estate.property,estate.property,model_estate_property,base.group_user,1,1,1,1
+estate.property.type,estate.property.type,model_estate_property_type,base.group_user,1,1,1,1
+estate.property.tag,estate.property.tag,model_estate_property_tag,base.group_user,1,1,1,1
+estate.property.offer,estate.property.offer,model_estate_property_offer,base.group_user,1,1,1,1

estate/tests/__init__.py

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+from . import (
+    test_estate_property,
+    test_estate_property_offer,
+)